Light filter



Patented Aug. 29,; 1 933 mesne assignments, to farififi' Manufamturing r-D t 1 1 a corpo ti n. r t,

Comp ny; Illinois Application Mama's, 1931, seaa a-529333 My invention relates tic improvements filters and in particular -t means for supporting such 'filters in relation-togthe source of light. While my invention j-is particularly applied to such use, it may be, (and' such use is contemplated)",- used to connect anytwo separate member s' in other arts, particularly where an adjustable or detachable connection isdesired and where ordinary fastening deviceszc'annot be read- 1 a i d- The main objects 1 of my'invention are first,

7 the I provisionof convenient mounting .means'. for.

a light filter or daylight screen near the light source. It is particularly applicable where it-is desired to attach the screen to a glass reflector.

without having to drill holes "into' dr specially, sh pe t lass fl ct A ur h r ob c s he. provision of ;a detachable. mounting; means i or a light filter for daylight screen ;so that the screen. o I

' bracketB; naa standard .0. A light filter 21 is plaeedin'the mouth 501? the frilector A and serves maybe readily removed or placed in position in screen or to replace them; 'A third objectis .to make the light, screen; adjustable withinj'it's use in connecting all manner of "disconnected members, where similar problems" arise, will be.v obviousf o l v fl Referring more praticularlyto'the drawing Fig. liis a perspective view 'of .myninvention applied. to, a portable lamp. 'of conventional stylei" The reflector is positioned solas to expose my invention, 1

F g 2 s ap c ve v mw emb ein e l tail; m n e iqn p l edm t ere ectori c the. lamp showninFig. 1, thereflector hein inverted;

'fso as to-expose my device.1

.. Fig; 3 isa top plan view ofthecla nping member. r a r Fig; 4 is a sideelevation of thesamel ml Fig. 7 is a perspective viewpi the light scr n supporting frame.

' Fig. 8 is aperspective iview of afmodifie d l or screen supporting 'frame.

Fig. 9 is a section on the pl 'n wi h fi r ne xtreme. s i

E18 10 5% w .sit l ite F?? ,l i it heli i I Fig; 15'jis a'sideeleva form of; main jclamping member.

ab1ef, for that purpose: The loops 2 5, are elo'n-, gated so as 't'o s lide over the fscrewsf28; 28 by imea si-b f h h the ame aYi,-b ?adj\1stab1'y f clamped to l a flexible eiamping membd1f;.29, 0f sheet n'ietal ofother suitable"substance;j;which' f Fi s-j 3land 4 looking inthe direction or the arrows 7 "F 5. r Q v e of nea h clamp preferred'embodiment, ,withtwdan l larly disposed portions 30 which whave. threaded holes.40,"j into 'whiclipass screws '31, the 1 latter i servin'gf'toi et inkstririggi,

Fig. 12 is a similar sectional v1ew' showing al fio modification.

15in;'th go azs aeae position 'of adjustment;

ig.513 *is a similar sectional view'showing an 'l ij isa sideelevationfo fa modified mainfclampingimember;and 1 i Ton of: another modifle'd Figflfi is'an endelevation of the part shown in Fig; 15, withthefaddition of co-operatingparts." Similar numerals referflto; similar" parts throughoufthe severalviews.

w i -lfi n e pa as D, is"shownifattachedltothe vreflector A of a portablef lamp (having a jrefle'ctor' supporting designated auaivay l to. interceptand absorb all 'unw antedrays ema- 1 as ano i'iicande'sceintelectric lamp. 1

11; The" light filterfzl is su ported a "light vet hating from e; lightsourbeElwhich is'fshownf 1 strong name: 22, which fconsists j of side" The side fmembers' 23 terminatefat. one eridin l0ops"2 5 disposed at rig'ht angles thereto; and at their other ends are bent li'nto hook'1form26] so as to.retain,thescreemzllwhen, itfis inserted in the frame ZZQQSimilar hookis 27are formed for the, same purpose on the ends of f the 7 cross bar 24, The whole frame,

thin asfpossibleso as to i terebtflt e minimum or light. and; I have found; steel "wire, very suit- 1 serves: asa clamping member, andat theflsame time supportsjthe light;screenjsupporting frame 2 2. jThe fclampingjmember 29 is 'pr'ovideifin the i m d o material. strong'enough'tosuPDOrt he light-filterbutas} old clamping jawsf32-in opposed relation to' the clamping member.2 9. I a;

V ofclampingjaw{32jto1bef that'shdwnin Fig.6.] Thepiece 3.2 islherej'shown?" provided with two 'angularly diSptfi'sed 'portioiis- 33land 34 the upper ofjwhichhaszan} extension** the-members 29 and 32 are'drawn together by.

consisting of a neck 35 and a head 36, the neck portion being designed to fit in the notch 37 of the clamping member 29 while the head 36 prevents lateral retraction therefrom. The piece 32 is also provided with a hole 38 through which passes one of thescrews 31. 1 1

The clamping member 29 has its middle portion folded so as to form 'a channel portion 39.

This channel portion is intended'to fit over the edgeof the reflector A and to coeoperate with the clamp members 32 to securely attach the,

member '29to the reflector. It accomplishes this due "to the'binding action which results when adjusting the screws 31. 5 Owing chiefly to the irregularities in the surface of the glass. the

clamping member 29'is deformed considerably and becauseof the, greater rigidity imparted by the channel portion and the confinement-of the reflector within the parallel walls of the channel agreater degree of contact and of pressure is secured betweenthe" clamping member and the reflector so that a firmer "grip of the clamp on the reflector is obtained.

numeral. :22 and its distinguishing feature lies in that the side members 23' are not separate as are'ther'nembers 23 of frame 22 but are formed from the samepiece of wirebent at its middle into a hook 26 corresponding" to the separate hooks 26, 26.. Loops 25"' are formedon the ends of the portionsji23,' and a'jcross-piece'2i' isjpro with the angularlydispos'e'd portions, which I vided;

-' Insteadof providing the "clamping member prefer where a reflector of suitable contour" is used, the clamping member may be inade of a flat piece 41, (Fig. 1 1) with screws 42, 42 provided for, attaching the screen supporting frame (221 and threaded-holes 43,,43, corresDQI ding to holes e0; 40, provided" for the clamping screws 31, 31. 'All' parts of memberel are in the same formed with'a channel Dart 3 9 as before, If desired, howeversthechannel part may be "omitted andsole reliance forsflupport be placed on the clamps32. "This is truejof the forms of Figs. 2 and g 15 (to. bedescribed) aswell as that of Fig.14'. j"

A still further: modification may "be made as shown infFigs. 15and116,.where the .main clamping Inembermay be provided with a hole 45 at each end. "Thro'ugheach'of. these holes which must not'bethreaded, 'wouldpass ascrew 31" which-would .b'e anchoredina threaded hole of .clamp 325, .Und'erthe head of this screw would be placed the loop 25: so that by adjusting a; single pair of screws theiscreen supporting frame -.--,would; be locked and the. whole device, clamped to Y I-n orderfto make the ciamping more effective 7 the reflector A, as shown in Fig. 12 may have I 7 its surfaces roughened'where they are engaged by clamps, as' shown at 46. An alternative con struction ',is the cementing on the reflector A of 7 strips 47 of paper, cloth, leather, rubber or any a other material which can be made to adhere-to glass' and wouldafford a good gripping surface. M V The latter, may then be. formed with a'fiattened portion ,48 s0 as to, afford .thejreflector at an angle, is preferable.

a greaterj contact area, .altho with' .anfun roughened reflector surface the formofclamp 32,

whichhasthe lowerlend of 'th'e'clamp engaging .The operation for the device will beunderstood screen supporting frame. This is designated by atQits' middle, and'the lower edge of the recess screw passing freely-through each clamp, and enplane except the central portion, Iwhichjmay. be

portionscarrying. adjustable-clamps, a frame ad- 'J'ustably carried by said mainmembe'rand hav from Figs, 9 and 10 in conjunction with Fig. 2.

To clamp the device in place, the. screws 31,31 are first loosened and the parts mounted on the re -flector. When iii-proper position the screws are tightened so as to lock the device in place. By loosening-the two screws 28 the frame 22 carrying the light screen 21 may be raised or. lowered, either to adjustthe screen in relation to the source of "light orto remove the screen. This latter is possible whenithe frame 22 is'in the position shown in Fig. 10. In this position the screen 21 may be .25, as shown in Figs .;2 and 7, being so spaced; that the screen will pass'between them and thru the cut away portion of 29. This is very convenient when breakage of the screen occurs as it enables slid to the right and out of the frame 22,. the loops readyreplacenient without disconnecting the clamping memberfrom the reflector. Intheposi hooks 26 and 27 and on thefourth side by the member 29. -Fig..9-shows the screen initsiuppermost position of adjustmentiit being remembered that in this figure the parts areshown upside down) and Fig. lo'shows it in its lowermost posi- .tion of adjustment shown in Fig.9 it is impossible [Q to remove the screen as it is held on three sides by tion, in which position, as explained above the formed into a channel adapted to engagethe edge "of the reflector," aclamp "engaging: each said angularly disposed portion in opposed relation; a

gaging a threaded hole in the main member whereby s'aidclamps and main'memberimayi be adjuste'dto grip the edge of the reflector, a second pair of screws carried in threaded engagement by the main member, a' frame composed of light but '20 strong material such as steel wire, .two, loops, dis posed in angular relation to vthe frame, said loops being elongated'soasto permit therbody'of said last -mentioned3screWs to pass therethrough but 7' s nipulated to adjustably'clamp the fr'ameto, the

not their heads, whereby said screws may be maclampingmember, said frame being provided with curved end-,portions in the form of hooks, and a 5 light'fllter supported: by said hooks and-retained j thereby,- said recess and {said frame being so;

dimensioned and relatively'disposedthatin oerbe rcmovedfrom'the frame by sliding'same later-- all-ythrough the recess in the main, member. 2. In a'lam'p, .a source'oflight, a reflector, a,

light screen, a clamping member comprising a 'tain positions of adjustment the light filter may main member having arece'ssed middle portionand ang'ularly disposed end, portions, said end in'g hook-shaped end portions, and a light'filter' supported'by said hooks and retained thereby, said frame being so dimensioned and disposed relatively to'said recess that in certain positions of adjustment-thelight filter may bedisengaged I from the frame by sliding same laterally through I the recess in the main member.-

3'. A connecting ;-means for two disconnected" elements comprising a main memberwith a cen tral' recess and angularly disposed end portions,'--

means carried bysaid end'portions' to adjustably grip one of the elements, supporting means adjustably carried by said main member and adapted to support and retain the other of saidelements, said recess andsupporting means being so dimensioned and relatively disposed that in certain positions of adjustment the last-named element may be disengaged from the supporting means and slid laterallythrough the recess.

4. In a lamp, a source oflight, areflector sur rounding said source of light except on one side;

a light filterpositioned in said opensideof said reflector, a. clamping member removably posi-f tioned-on one side of said reflector and compris-.

ing a main memberha'ving a recess formed at its middle and the lower edge of the recess formed into a channel adapted to engage the edge of the reflector, a pair of screws passing freely through the main member and on its other side each in threaded engagement with a clamp, a frame of light but strong material, such as steel wire said frame having elongated loops, each loop wide enough to'pass over the body of oneof the said screws but not its head, said loops beingposi- 1; tioned on the screws intermediate the screw heads and the main member, I hooks formed. on. said frame, a light filter'supported byand retained by said hooks, said screws being adapted toadjustably lock together the frame, the main mem-I- being so dimensioned and relatively disposed that; 4 in certain positions of adjustment the light filter her, and the clamps said recess and said frame may be disengaged from the hooks inthe'fram'e by sliding same laterally through the recess in the .main' member. u 7

5. In a lamp, a sourceof light, a reflector, a H

light screen, a clamping vmeir'iber comprising a main member having a recessed middle portion, the end portions of I the 'main member carrying adjustable clamps, a frame adj'ustably carried; by saidmain member and having'hook shaped end i as,

portions, and a lightfiltersupported by said hooks and retainedthereby, said lirame being'so dimensioned and disposedrelatively to said recess H that in certain positions of adjustment the light filter may be disengaged fromtheframe by'sli'ding sarne later'ally through the" recess in th e jmain member.

15AUUsrBoernorni/rf i e 

